Income Taxes - Deferred Income Tax assets And Liabilities Related To Vehicle Programs (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Deferred income tax assets:
Other	$ 213	$ 167
Deferred income tax assets	2,718	2,154
Deferred income tax liabilities:
Other	7	4
Deferred income tax liabilities under vehicle programs, net	850	775
Vehicle Programs
Deferred income tax assets:
Depreciation and amortization	80	63
Deferred income tax liabilities:
Depreciation and amortization	3,497	2,815
Other assets
Deferred income tax assets:
Other	28	22
Assets
Deferred income tax assets:
Deferred income tax assets	108	85
Other
Deferred income tax liabilities:
Other	29	24
Liability
Deferred income tax liabilities:
Deferred income tax liabilities	3,526	2,839
Vehicle Programs, Net
Deferred income tax liabilities:
Deferred income tax liabilities under vehicle programs, net	$ 3,418	$ 2,754